不断深化的电力现货市场改革给售电公司的购售电业务带来了新的机遇和挑战,现货市场下售电公司的决策研究具有重要意义。通过价格-份额函数反映售电公司在零售市场中面临的竞争和用户选择行为,建立售电公司购售电的成本与收益的数学模型...不断深化的电力现货市场改革给售电公司的购售电业务带来了新的机遇和挑战,现货市场下售电公司的决策研究具有重要意义。通过价格-份额函数反映售电公司在零售市场中面临的竞争和用户选择行为,建立售电公司购售电的成本与收益的数学模型,基于对数正态分布产生一系列现货电价的不同场景,用条件在险价值(conditional value at risk,CVaR)模型量化给定置信度水平下所有场景中的购售电风险,最后建立收益-风险目标函数。通过算例分析比较不同风险偏好下,有中长期交易限制和无中长期交易限制下售电公司的售电价格、市场份额、中长期购电比例、风险和收益。算例分析表明:当中长期购电不存在限制时,售电公司会制定较高的零售电价并签订大量的中长期合同;当存在中长期购电限制时,售电公司必须降低零售电价、提高市场份额,以获取更多的中长期交易资格来实现收益最大化,此时售电公司的风险和收益均低于不存在中长期限制时的水平,用户侧福利上升。展开更多
In power markets,a significant research area is how a market participant should bid strategically to obtain the maximum gain of itself without sacrificing constraints of the m arket and system operation constraints,an...In power markets,a significant research area is how a market participant should bid strategically to obtain the maximum gain of itself without sacrificing constraints of the m arket and system operation constraints,and how the m arket administrator should estim ate and judge the unfair competitions.This issue requires applications of gam e theory.In this paper game theory and its applications in power m arkets are introduced. The paper is composed of two parts. The first part is to introduce the history and classification of gam e theory and its applications in various areas. Simple examples are presented to show how to build up a proper m ath m odel for a specific gaming problem and how to find its solution.The important concept of Nash equilibria and the difficulties in finding a feasible Nash equilibrium are also emphasized.The second part focuses on the applications of game theory in power markets,which include the bidding strategies of the generation com panies,the pricing of transm ission and wheeling and the rational allocation of the transmission cost,and the estimation and judgement of the unfair market power which may appear in the power market. This project is supported by National Key Basic Research Special Fund of China No. G19980 2 0 30 5 ,the Research Grant Council RGC ,Hong Kong SAR Government,and the Com mittee of Research and Conference Grant CRCG ,the U niversity of Hong Kong.展开更多
文摘不断深化的电力现货市场改革给售电公司的购售电业务带来了新的机遇和挑战,现货市场下售电公司的决策研究具有重要意义。通过价格-份额函数反映售电公司在零售市场中面临的竞争和用户选择行为,建立售电公司购售电的成本与收益的数学模型,基于对数正态分布产生一系列现货电价的不同场景,用条件在险价值(conditional value at risk,CVaR)模型量化给定置信度水平下所有场景中的购售电风险,最后建立收益-风险目标函数。通过算例分析比较不同风险偏好下,有中长期交易限制和无中长期交易限制下售电公司的售电价格、市场份额、中长期购电比例、风险和收益。算例分析表明:当中长期购电不存在限制时,售电公司会制定较高的零售电价并签订大量的中长期合同;当存在中长期购电限制时,售电公司必须降低零售电价、提高市场份额,以获取更多的中长期交易资格来实现收益最大化,此时售电公司的风险和收益均低于不存在中长期限制时的水平,用户侧福利上升。
文摘In power markets,a significant research area is how a market participant should bid strategically to obtain the maximum gain of itself without sacrificing constraints of the m arket and system operation constraints,and how the m arket administrator should estim ate and judge the unfair competitions.This issue requires applications of gam e theory.In this paper game theory and its applications in power m arkets are introduced. The paper is composed of two parts. The first part is to introduce the history and classification of gam e theory and its applications in various areas. Simple examples are presented to show how to build up a proper m ath m odel for a specific gaming problem and how to find its solution.The important concept of Nash equilibria and the difficulties in finding a feasible Nash equilibrium are also emphasized.The second part focuses on the applications of game theory in power markets,which include the bidding strategies of the generation com panies,the pricing of transm ission and wheeling and the rational allocation of the transmission cost,and the estimation and judgement of the unfair market power which may appear in the power market. This project is supported by National Key Basic Research Special Fund of China No. G19980 2 0 30 5 ,the Research Grant Council RGC ,Hong Kong SAR Government,and the Com mittee of Research and Conference Grant CRCG ,the U niversity of Hong Kong.